# SDR DXTA2026021106822

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2026
- Submitted: February 11, 2026
- Operation: Air carrier
- Aircraft: [N190QS](https://openairdocs.org/aircraft/N190QS), registered now
- Make and model: Bombdr BD7001A12
- Aircraft serial: 70196
- Aircraft time: 1,077 hours, 371 cycles
- System (JASC): [2100 · Air Conditioning System](https://openairdocs.org/jasc/2100)
- Part: Sensor
- Part number: 93574A010005
- Part serial: 93574EB02413
- Condition: Defective
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026021106822

## Discrepancy

ABOUT 5 MINUTES INTO FLIGHT,  NOTICED A SLIGHT SMOKY ODOR & A MIN LATER, FA SAID SHE SMELLED SMOKE.   SIC ALSO SMELLED SMOKE.  WAS A STRONGER TOWARDS ZONE 3 & IT WENT AWAY & CAME BACK.  SMELLED LIKE A CAMP FIRE SMOKE, BUT FA SAID IT SMELLED LIKE A CHEMICAL.  NOT A STRONG ODOR & NEVER WENT TOTALLY AWAY.  RAN A/C SYSTEM ON APU BLEED AIR WITH MAXIMUM HEAT SELECTED IN AUTO MODE,   NO UNUSUAL ODORS NOTED. RAN SYSTEM IN MANUAL INCREASING TEMP SIGNIFICANTLY BUT STILL HAD NO ODOR.  PERFORMED A HIGH-POWER RUN WITH TEMP MAXED IN AUTO & NO ODOR.  RETURNED TO RAMP & SHUTDOWN ENGS,  LEFT APU RUNNING WITH TEMP IN MAX AUTO.  BEFORE SHUTTING APU DOWN, LOOKED AT BLEED SYNOPTIC PAGE & NOTICED ENTRY DUCT TEMP WAS 70 DEGREES C.   PERFORMED TRIM AIR VALVE OPS CHK, & DUCT TEMP SENSOR OPS CHK,  NO DEFECTS NOTED. TOOK ACFT OUT FOR ANOTHER HIGH-POWER RUN WITH NO DEFECTS.  COULD NOT DUPLICATE HIGH TEMP IN ENTRY DUCT OR ODOR.   REPLACED ENTRY DUCT TEMP SENSOR E105. REMOVED THE SUSPECTED BAD DUCT TEMP SENSOR E105 & INSTALLED A NEW TEMP SENSOR E105 & OPS CHKD GOOD  IAW AMP TASKS BD700-A-J21-21-21-00AAA-520A-A & BD700-A-J21-21-21-00AAA-720A-A .

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.